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<a href="seq__num_8hpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno">    1</span><span class="comment">/* Flow</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno">    2</span><span class="comment"> * Copyright 2023 Akamai Technologies, Inc.</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno">    3</span><span class="comment"> *</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno">    4</span><span class="comment"> * Licensed under the Apache License, Version 2.0 (the</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno">    5</span><span class="comment"> * &quot;License&quot;); you may not use this file except in</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno">    6</span><span class="comment"> * compliance with the License.  You may obtain a copy</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno">    7</span><span class="comment"> * of the License at</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno">    8</span><span class="comment"> *</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno">    9</span><span class="comment"> *   https://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno">   10</span><span class="comment"> *</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno">   11</span><span class="comment"> * Unless required by applicable law or agreed to in</span></div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno">   12</span><span class="comment"> * writing, software distributed under the License is</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno">   13</span><span class="comment"> * distributed on an &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno">   14</span><span class="comment"> * CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno">   15</span><span class="comment"> * See the License for the specific language governing</span></div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno">   16</span><span class="comment"> * permissions and limitations under the License. */</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno">   17</span><span class="comment"></span> </div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno">   18</span><span class="comment">/// @file</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno">   19</span><span class="comment"></span><span class="preprocessor">#pragma once</span></div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno">   20</span> </div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno">   21</span><span class="preprocessor">#include &quot;<a class="code" href="detail_2net__flow__fwd_8hpp.html">flow/net_flow/detail/net_flow_fwd.hpp</a>&quot;</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno">   22</span><span class="preprocessor">#include &quot;<a class="code" href="log_8hpp.html">flow/log/log.hpp</a>&quot;</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno">   23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno">   24</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceflow_1_1net__flow.html">flow::net_flow</a></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno">   25</span>{</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno">   26</span><span class="comment"></span> </div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno">   27</span><span class="comment">/**</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno">   28</span><span class="comment"> * An internal `net_flow` sequence number identifying a piece of data.  While it would not be</span></div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno">   29</span><span class="comment"> * hard to just deal with raw sequence numbers everywhere, it seemed prudent to wrap the raw number</span></div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno">   30</span><span class="comment"> * in a light-weight object in order to make the interface abstract and be able to change the</span></div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno">   31</span><span class="comment"> * implementation later.  For example, we may change the size of the number and how wrapping works</span></div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno">   32</span><span class="comment"> * (and even whether there is wrapping), at which point we&#39;d rather only change this class&#39;s</span></div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno">   33</span><span class="comment"> * internals as opposed to code all over the place.  For example, operator+() may change from not</span></div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno">   34</span><span class="comment"> * worrying about wrapping to worrying about it (and similarly for operator-()).</span></div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno">   35</span><span class="comment"> *</span></div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno">   36</span><span class="comment"> * The companion nested class Generator is used to generate the initial sequence number (ISN) for a</span></div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno">   37</span><span class="comment"> * connection.</span></div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno">   38</span><span class="comment"> *</span></div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno">   39</span><span class="comment"> * What does one Sequence_number represent?  A byte or a packet?  This class is intentionally</span></div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno">   40</span><span class="comment"> * ignorant of this.  It just deals with a number on the number line.  The user of the class is</span></div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno">   41</span><span class="comment"> * responsible for such matters.</span></div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno">   42</span><span class="comment"> *</span></div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno">   43</span><span class="comment"> * ### Metadata ###</span></div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno">   44</span><span class="comment"> *</span></div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno">   45</span><span class="comment"> * Sequence numbers being used for a given purpose always have certain features to make them useful.</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span><span class="comment"> * The following is a (n arguably overfly formal and detailed) discussion of those features and how</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span><span class="comment"> * we support them via &quot;metadata.&quot;</span></div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno">   48</span><span class="comment"> *</span></div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno">   49</span><span class="comment"> *   - Each sequence number line has a &quot;zero&quot; point Z, which is a sequence number such that it is more</span></div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno">   50</span><span class="comment"> *     useful to specify a given absolute sequence number as (S - Z) with the corresponding explicit sign.</span></div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno">   51</span><span class="comment"> *     So S = Z is written as =0, S &gt; Z (most typical) is +M, S &lt; Z (typically invalid)</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno">   52</span><span class="comment"> *     is -M, where M means magnitude, with M &gt; 0.</span></div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno">   53</span><span class="comment"> *   - Sometimes, in particular when individual sequence numbers represent individual sequential bytes in</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno">   54</span><span class="comment"> *     non-stop traffic (i.e., where user has more bytes than bandwidth can pass at any time, so there are</span></div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno">   55</span><span class="comment"> *     always more bytes), and when the traffic is packetized into blocks of size B, it is convenient to</span></div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno">   56</span><span class="comment"> *     specify the magnitude M as a multiple of B. This can be written as xN%R -- or just xN when R = 0 --</span></div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno">   57</span><span class="comment"> *     where N = M / B, R = M % B.  If one chooses zero point Z just right (so that S = 0 represents the very</span></div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno">   58</span><span class="comment"> *     first byte in the entire sequence), and there is so much traffic that there are no incomplete</span></div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno">   59</span><span class="comment"> *     packets (i.e., of length &lt; B) formed, then edge sequence numbers and packet (and multi-packet) ranges</span></div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno">   60</span><span class="comment"> *     become extremely simple, small, convenient.</span></div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno">   61</span><span class="comment"> *   - Consider Flow DATA/ACK sequence numbers in particular. The ISN is the value Si chosen for SYN message;</span></div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno">   62</span><span class="comment"> *     therefore the very first byte has absolute number (Si + 1).  So let&#39;s set Z = (Si + 1). If only full</span></div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno">   63</span><span class="comment"> *     packets are ever sent (which would be true if the Send buffer is always kept full by user, i.e.,</span></div>
<div class="line"><a id="l00064" name="l00064"></a><span class="lineno">   64</span><span class="comment"> *     pipe &lt; user data supply, quite typical in test applications), then every single packet will have</span></div>
<div class="line"><a id="l00065" name="l00065"></a><span class="lineno">   65</span><span class="comment"> *     sequence number range [+x`N`, +x`(N + 1)`) (where `N` &gt;= 0); and every single contiguous-packet range</span></div>
<div class="line"><a id="l00066" name="l00066"></a><span class="lineno">   66</span><span class="comment"> *     of I = 1 or more packets will thus have form [+x`N`, +x`(N + I)`).  Of course, B = max-block-size.</span></div>
<div class="line"><a id="l00067" name="l00067"></a><span class="lineno">   67</span><span class="comment"> *     - If one were to use absolute numbers instead, they would be incredibly far from zero and also multiples</span></div>
<div class="line"><a id="l00068" name="l00068"></a><span class="lineno">   68</span><span class="comment"> *       of many bytes (often that number, B, being something annoying like 8192 or even some odd number).</span></div>
<div class="line"><a id="l00069" name="l00069"></a><span class="lineno">   69</span><span class="comment"> *       That&#39;s a far cry from literally 0, 1, 2, ... (with %remainder kicking in, if an incomplete packet</span></div>
<div class="line"><a id="l00070" name="l00070"></a><span class="lineno">   70</span><span class="comment"> *       of DATA is generated for some reason).</span></div>
<div class="line"><a id="l00071" name="l00071"></a><span class="lineno">   71</span><span class="comment"> *     - CAUTION!  It&#39;s tempting -- for this particular application (or in TCP sequence numbers, as well) --</span></div>
<div class="line"><a id="l00072" name="l00072"></a><span class="lineno">   72</span><span class="comment"> *       to set Z = ISN.  However, the ISN, by convention, equals *1 less* than the first actual DATA</span></div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno">   73</span><span class="comment"> *       byte&#39;s sequence number.  Always remember to set Z = ISN + 1 -- *even inside the ISN itself*!</span></div>
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno">   74</span><span class="comment"> *   - Every sequence number line has some qualitative purpose; e.g., &quot;Remote DATA-received sequence numbers&quot; or</span></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno">   75</span><span class="comment"> *     &quot;Local ACK-received sequence numbers.&quot;  This can be identified by a single letter prefix places in front</span></div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno">   76</span><span class="comment"> *     of a number on the line.  E.g., a full number might look like: L-x23%1, which means S = Z - (23 x B + 1).</span></div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno">   77</span><span class="comment"> *     The prefix is called &quot;number line ID.&quot;</span></div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno">   78</span><span class="comment"> *     - Note that Z and B themselves are hidden.  If computing S is ever necessary, one might have to hunt for</span></div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno">   79</span><span class="comment"> *       it (or Z, B) in prior logs.  This is a cost that would be paid for the conciseness of L+x2 (for example)</span></div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno">   80</span><span class="comment"> *       instead of 1285561384998534.</span></div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno">   81</span><span class="comment"> *</span></div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno">   82</span><span class="comment"> * Sequence_number has optional support for the above conventions.  While #m_num stores the basic absolute value S,</span></div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno">   83</span><span class="comment"> * we also store the following, called *metadata*:</span></div>
<div class="line"><a id="l00084" name="l00084"></a><span class="lineno">   84</span><span class="comment"> *</span></div>
<div class="line"><a id="l00085" name="l00085"></a><span class="lineno">   85</span><span class="comment"> *   - Zero point, Z (#m_zero_point_num).</span></div>
<div class="line"><a id="l00086" name="l00086"></a><span class="lineno">   86</span><span class="comment"> *     - Z = 0 = default, is allowed.</span></div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno">   87</span><span class="comment"> *       - However, by convention sign will be omitted from `ostream`-serialization -- since raw number is unsigned,</span></div>
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno">   88</span><span class="comment"> *         and no non-zero numbers less than 0 exist.</span></div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno">   89</span><span class="comment"> *       - Recall, also, that S = 0 itself is reserved/illegal by convention.</span></div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno">   90</span><span class="comment"> *   - Multiple size, B (#m_multiple_size)</span></div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno">   91</span><span class="comment"> *     - 0 = default, &quot;none chosen&quot;.</span></div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno">   92</span><span class="comment"> *       - `ostream`-serialization will avoid mentioning multiples/remainders.</span></div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno">   93</span><span class="comment"> *   - Number line ID (#m_num_line_id).</span></div>
<div class="line"><a id="l00094" name="l00094"></a><span class="lineno">   94</span><span class="comment"> *     - `char(0)` = default, &quot;none chosen&quot;.</span></div>
<div class="line"><a id="l00095" name="l00095"></a><span class="lineno">   95</span><span class="comment"> *       - `ostream`-serialization will simply feature no prefix.</span></div>
<div class="line"><a id="l00096" name="l00096"></a><span class="lineno">   96</span><span class="comment"> *</span></div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno">   97</span><span class="comment"> * Use set_metadata() to set the full set of metadata.  For maximum effectiveness, consider these tips -- especially</span></div>
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno">   98</span><span class="comment"> * vis-a-vis DATA/ACK-pertinent sequence numbers.</span></div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno">   99</span><span class="comment"> *</span></div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno">  100</span><span class="comment"> *   - Consider not calling set_metadata() on an incoming packet&#39;s various sequence number members until it has been</span></div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno">  101</span><span class="comment"> *     logged (if appropriate) once.  Thus the raw number is available *if* necessary (hopefully never).</span></div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno">  102</span><span class="comment"> *   - Remember that, by Flow-protocol (and, arguably, TCP) convention, Z = ISN + 1.  Z =/= ISN.  See above for details.</span></div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno">  103</span><span class="comment"> *     - Even for the Sequence_number storing the ISN; actually, *especially* that one (see below re. copying)!</span></div>
<div class="line"><a id="l00104" name="l00104"></a><span class="lineno">  104</span><span class="comment"> *   - Importantly, every copy (`operator=()`, copy constructor),</span></div>
<div class="line"><a id="l00105" name="l00105"></a><span class="lineno">  105</span><span class="comment"> *     including many implicit invocations thereof (`operator+()`, associative storage, etc.), will always copy</span></div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno">  106</span><span class="comment"> *     the metadata too.  Be sure to rely on this strongly!  If you set an ISN with its Z = ISN + 1 and B = socket&#39;s</span></div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno">  107</span><span class="comment"> *     max-block-size; and then all other Sequence_number objects are copies (direct or otherwise) thereof, then</span></div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno">  108</span><span class="comment"> *     they should have the proper metadata and will be beautifully logged as a result.  So just set the induction</span></div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno">  109</span><span class="comment"> *     base and let the machinery work.</span></div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno">  110</span><span class="comment"> *   - Metadata are not the actual data (#m_num = actual data) and absolutely do not participate in any</span></div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno">  111</span><span class="comment"> *     comparison, arithmetic, or hash operations (which means they&#39;re also 100% ignored in associative lookups).</span></div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno">  112</span><span class="comment"> *     So algorithms will work even if there&#39;s some bug with metadata.</span></div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno">  113</span><span class="comment"> *</span></div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno">  114</span><span class="comment"> * ### Thread safety ###</span></div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno">  115</span><span class="comment"> * Equally thread-safe as built-in types (not safe to read/write or write/write one</span></div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno">  116</span><span class="comment"> * object simultaneously).</span></div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno">  117</span><span class="comment"> *</span></div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno">  118</span><span class="comment"> * Implementation notes</span></div>
<div class="line"><a id="l00119" name="l00119"></a><span class="lineno">  119</span><span class="comment"> * --------------------</span></div>
<div class="line"><a id="l00120" name="l00120"></a><span class="lineno">  120</span><span class="comment"> *</span></div>
<div class="line"><a id="l00121" name="l00121"></a><span class="lineno">  121</span><span class="comment"> * Generator and Sequence_number work based on the same assumptions (like the</span></div>
<div class="line"><a id="l00122" name="l00122"></a><span class="lineno">  122</span><span class="comment"> * structure of the sequence number space), and thus their implementations may be related.  So if</span></div>
<div class="line"><a id="l00123" name="l00123"></a><span class="lineno">  123</span><span class="comment"> * one is changed the other may also need to be changed (internally).</span></div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno">  124</span><span class="comment"> */</span></div>
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number.html">  125</a></span><span class="keyword">class </span><a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a></div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno">  126</span>{</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno">  127</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno">  128</span>  <span class="comment">// Types.</span></div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno">  129</span> </div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno">  130</span>  <span class="comment">// See below.</span></div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno">  131</span>  <span class="keyword">class </span><a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html">Generator</a>;</div>
<div class="line"><a id="l00132" name="l00132"></a><span class="lineno">  132</span><span class="comment"></span> </div>
<div class="line"><a id="l00133" name="l00133"></a><span class="lineno">  133</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00134" name="l00134"></a><span class="lineno">  134</span><span class="comment">   * Raw sequence number type.  64 bits used because sequence number wrap-around would take many</span></div>
<div class="line"><a id="l00135" name="l00135"></a><span class="lineno">  135</span><span class="comment">   * centuries at high network speeds to occur if the initial sequence number is picked to be</span></div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno">  136</span><span class="comment">   * sufficiently small.  See also Generator::S_MAX_INIT_SEQ_NUM.</span></div>
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno">  137</span><span class="comment">   */</span></div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number.html#ab307e12c0cf8cefbe7fb1ec8588af2a8">  138</a></span>  <span class="keyword">using </span><a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab307e12c0cf8cefbe7fb1ec8588af2a8">seq_num_t</a> = uint64_t;</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno">  139</span><span class="comment"></span> </div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno">  140</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno">  141</span><span class="comment">   * Integer type used to express differences (distances) between Sequence_numbers.</span></div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno">  142</span><span class="comment">   *</span></div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno">  143</span><span class="comment">   * @note This type can overflow for extremely large sequence number differences (those spanning</span></div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno">  144</span><span class="comment">   *       over half of the range).  This should not usually be a concern in practice.</span></div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno">  145</span><span class="comment">   *</span></div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno">  146</span><span class="comment">   * @todo Allowing overflow by using this definition of #seq_num_delta_t is somewhat unlike the rest</span></div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno">  147</span><span class="comment">   * of the implementation of Sequence_number which avoids overflow like the plague.  Should we do something</span></div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno">  148</span><span class="comment">   * like use `double` or a big-integer type from boost.multiprecision?</span></div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno">  149</span><span class="comment">   */</span></div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number.html#ab83e641aa9497115f6dbaf76b92f73c6">  150</a></span>  <span class="keyword">using </span><a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab83e641aa9497115f6dbaf76b92f73c6">seq_num_delta_t</a> = int64_t;</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno">  151</span> </div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno">  152</span>  <span class="comment">// Constructors/destructor.</span></div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno">  153</span><span class="comment"></span> </div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno">  154</span><span class="comment">  /// Constructs sequence number that is zero (not a valid sequence number; less than all others).</span></div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno">  155</span><span class="comment"></span>  <span class="keyword">explicit</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#ad86f280e517a60ebbe1edfeac7263d6e">Sequence_number</a>();</div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno">  156</span><span class="comment"></span> </div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno">  157</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno">  158</span><span class="comment">   * Copy constructor.  Identical to calling: `operator=(source);`.</span></div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno">  159</span><span class="comment">   *</span></div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno">  160</span><span class="comment">   * Implementation detail: Default implementation used.  This is basically here for documentation purposes.</span></div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno">  161</span><span class="comment">   *</span></div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno">  162</span><span class="comment">   * @param source</span></div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno">  163</span><span class="comment">   *        Source object.</span></div>
<div class="line"><a id="l00164" name="l00164"></a><span class="lineno">  164</span><span class="comment">   */</span></div>
<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number.html#ad42584bd93111318e71d75d2898e0d72">  165</a></span>  <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#ad42584bd93111318e71d75d2898e0d72">Sequence_number</a>(<span class="keyword">const</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; source);</div>
<div class="line"><a id="l00166" name="l00166"></a><span class="lineno">  166</span> </div>
<div class="line"><a id="l00167" name="l00167"></a><span class="lineno">  167</span>  <span class="comment">// Methods.</span></div>
<div class="line"><a id="l00168" name="l00168"></a><span class="lineno">  168</span><span class="comment"></span> </div>
<div class="line"><a id="l00169" name="l00169"></a><span class="lineno">  169</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00170" name="l00170"></a><span class="lineno">  170</span><span class="comment">   * Copy operator.  Copies both the data (the essential absolute value) and all the metadata.</span></div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno">  171</span><span class="comment">   *</span></div>
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno">  172</span><span class="comment">   * Implementation detail: Default implementation used.  This is basically here for documentation purposes.</span></div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno">  173</span><span class="comment">   *</span></div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno">  174</span><span class="comment">   * @param source</span></div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno">  175</span><span class="comment">   *        Source object.  `*this` is allowed but pointless.</span></div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno">  176</span><span class="comment">   * @return `*this`.</span></div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno">  177</span><span class="comment">   */</span></div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number.html#aad867d849f5c76125dc9ea1abb649c15">  178</a></span>  <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#aad867d849f5c76125dc9ea1abb649c15">operator=</a>(<span class="keyword">const</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; source);</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno">  179</span><span class="comment"></span> </div>
<div class="line"><a id="l00180" name="l00180"></a><span class="lineno">  180</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00181" name="l00181"></a><span class="lineno">  181</span><span class="comment">   * Returns true if and only if `*this != Sequence_number()` (i.e., is non-zero).</span></div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno">  182</span><span class="comment">   *</span></div>
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno">  183</span><span class="comment">   * @return Ditto.</span></div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno">  184</span><span class="comment">   */</span></div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno">  185</span>  <span class="keywordtype">bool</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#a1d555c4d74ef4d87f91c8ce51ec47a6b">valid</a>() <span class="keyword">const</span>;</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno">  186</span><span class="comment"></span> </div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno">  187</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno">  188</span><span class="comment">   * Returns the distance from `*this` to `rhs`.  This may be negative, meaning `rhs &gt; *this`.</span></div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno">  189</span><span class="comment">   *</span></div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno">  190</span><span class="comment">   * @note This will overflow if the difference is extremely large (over half of the sequence number</span></div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno">  191</span><span class="comment">   *       range).  This should not usually be a concern in practice... but see to-do on #seq_num_delta_t.</span></div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno">  192</span><span class="comment">   * @param rhs</span></div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno">  193</span><span class="comment">   *        Object to compare.</span></div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno">  194</span><span class="comment">   * @return See above.</span></div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno">  195</span><span class="comment">   */</span></div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno">  196</span>  <a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab83e641aa9497115f6dbaf76b92f73c6">seq_num_delta_t</a> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#a3ffb36c06efb99de2c36c69678b51acb">operator-</a>(<span class="keyword">const</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; rhs) <span class="keyword">const</span>;</div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno">  197</span><span class="comment"></span> </div>
<div class="line"><a id="l00198" name="l00198"></a><span class="lineno">  198</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00199" name="l00199"></a><span class="lineno">  199</span><span class="comment">   * Returns new sequence number that is `*this` advanced (or reversed) by the given distance.</span></div>
<div class="line"><a id="l00200" name="l00200"></a><span class="lineno">  200</span><span class="comment">   *</span></div>
<div class="line"><a id="l00201" name="l00201"></a><span class="lineno">  201</span><span class="comment">   * @param delta</span></div>
<div class="line"><a id="l00202" name="l00202"></a><span class="lineno">  202</span><span class="comment">   *        How much to advance (or reverse, if negative) the result.</span></div>
<div class="line"><a id="l00203" name="l00203"></a><span class="lineno">  203</span><span class="comment">   * @return See above.</span></div>
<div class="line"><a id="l00204" name="l00204"></a><span class="lineno">  204</span><span class="comment">   */</span></div>
<div class="line"><a id="l00205" name="l00205"></a><span class="lineno">  205</span>  <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#a3273e706e3184fd8647d7a8ed77b3a2b">operator+</a>(<a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab83e641aa9497115f6dbaf76b92f73c6">seq_num_delta_t</a> delta) <span class="keyword">const</span>;</div>
<div class="line"><a id="l00206" name="l00206"></a><span class="lineno">  206</span><span class="comment"></span> </div>
<div class="line"><a id="l00207" name="l00207"></a><span class="lineno">  207</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00208" name="l00208"></a><span class="lineno">  208</span><span class="comment">   * Equivalent to `operator+(-delta)`.</span></div>
<div class="line"><a id="l00209" name="l00209"></a><span class="lineno">  209</span><span class="comment">   *</span></div>
<div class="line"><a id="l00210" name="l00210"></a><span class="lineno">  210</span><span class="comment">   * @param delta</span></div>
<div class="line"><a id="l00211" name="l00211"></a><span class="lineno">  211</span><span class="comment">   *        How much to reverse (or advance, if negative) the result.</span></div>
<div class="line"><a id="l00212" name="l00212"></a><span class="lineno">  212</span><span class="comment">   * @return See above.</span></div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno">  213</span><span class="comment">   */</span></div>
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno">  214</span>  <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#a3ffb36c06efb99de2c36c69678b51acb">operator-</a>(<a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab83e641aa9497115f6dbaf76b92f73c6">seq_num_delta_t</a> delta) <span class="keyword">const</span>;</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno">  215</span><span class="comment"></span> </div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno">  216</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno">  217</span><span class="comment">   * Advances (or reverses) this sequence number by the given distance.</span></div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno">  218</span><span class="comment">   *</span></div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno">  219</span><span class="comment">   * @param delta</span></div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno">  220</span><span class="comment">   *        How much to advance (or reverse, if negative) `*this`.</span></div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno">  221</span><span class="comment">   * @return `*this`.</span></div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno">  222</span><span class="comment">   */</span></div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno">  223</span>  <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#a88c07f9b2c18c962b68a3886e2f005f5">operator+=</a>(<a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab83e641aa9497115f6dbaf76b92f73c6">seq_num_delta_t</a> delta);</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno">  224</span><span class="comment"></span> </div>
<div class="line"><a id="l00225" name="l00225"></a><span class="lineno">  225</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno">  226</span><span class="comment">   * Equivalent to: `operator+=(-delta)`.</span></div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno">  227</span><span class="comment">   *</span></div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno">  228</span><span class="comment">   * @param delta</span></div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno">  229</span><span class="comment">   *        How much to reverse (or advance, if negative) *this.</span></div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno">  230</span><span class="comment">   * @return *this.</span></div>
<div class="line"><a id="l00231" name="l00231"></a><span class="lineno">  231</span><span class="comment">   */</span></div>
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno">  232</span>  <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#aab26c0d5ac005a150ec9c31c3d83802c">operator-=</a>(<a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab83e641aa9497115f6dbaf76b92f73c6">seq_num_delta_t</a> delta);</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno">  233</span><span class="comment"></span> </div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno">  234</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno">  235</span><span class="comment">   * Whether `*this` is the same sequence number as `rhs`.</span></div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno">  236</span><span class="comment">   *</span></div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno">  237</span><span class="comment">   * @param rhs</span></div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno">  238</span><span class="comment">   *        Object to compare.</span></div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno">  239</span><span class="comment">   * @return See above.</span></div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno">  240</span><span class="comment">   */</span></div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno">  241</span>  <span class="keywordtype">bool</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#a24819702817b8730ec27a39675768d55">operator==</a>(<span class="keyword">const</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; rhs) <span class="keyword">const</span>;</div>
<div class="line"><a id="l00242" name="l00242"></a><span class="lineno">  242</span><span class="comment"></span> </div>
<div class="line"><a id="l00243" name="l00243"></a><span class="lineno">  243</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno">  244</span><span class="comment">   * Return `!(*this == rhs)`.</span></div>
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno">  245</span><span class="comment">   *</span></div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno">  246</span><span class="comment">   * @param rhs</span></div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno">  247</span><span class="comment">   *        Object to compare.</span></div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno">  248</span><span class="comment">   * @return See above.</span></div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno">  249</span><span class="comment">   */</span></div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno">  250</span>  <span class="keywordtype">bool</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#af4a83d85ed26f8d0e0c81375d5505258">operator!=</a>(<span class="keyword">const</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; rhs) <span class="keyword">const</span>;</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno">  251</span><span class="comment"></span> </div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno">  252</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno">  253</span><span class="comment">   * Whether `*this` is less than `rhs`.</span></div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno">  254</span><span class="comment">   *</span></div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno">  255</span><span class="comment">   * @param rhs</span></div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno">  256</span><span class="comment">   *        Object to compare.</span></div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno">  257</span><span class="comment">   * @return See above.</span></div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno">  258</span><span class="comment">   */</span></div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno">  259</span>  <span class="keywordtype">bool</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#a40b55e448b1ef23467e9f33b2c62d01f">operator&lt;</a>(<span class="keyword">const</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; rhs) <span class="keyword">const</span>;</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno">  260</span><span class="comment"></span> </div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno">  261</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno">  262</span><span class="comment">   * Return `rhs &lt; *this`.</span></div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno">  263</span><span class="comment">   *</span></div>
<div class="line"><a id="l00264" name="l00264"></a><span class="lineno">  264</span><span class="comment">   * @param rhs</span></div>
<div class="line"><a id="l00265" name="l00265"></a><span class="lineno">  265</span><span class="comment">   *        Object to compare.</span></div>
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno">  266</span><span class="comment">   * @return See above.</span></div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno">  267</span><span class="comment">   */</span></div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno">  268</span>  <span class="keywordtype">bool</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#ae5ee8f6f299fbc5e578bcfd337bf520b">operator&gt;</a>(<span class="keyword">const</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; rhs) <span class="keyword">const</span>;</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno">  269</span><span class="comment"></span> </div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno">  270</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno">  271</span><span class="comment">   * Return `!(*this &gt; rhs)`.</span></div>
<div class="line"><a id="l00272" name="l00272"></a><span class="lineno">  272</span><span class="comment">   *</span></div>
<div class="line"><a id="l00273" name="l00273"></a><span class="lineno">  273</span><span class="comment">   * @param rhs</span></div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno">  274</span><span class="comment">   *        Object to compare.</span></div>
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno">  275</span><span class="comment">   * @return See above.</span></div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno">  276</span><span class="comment">   */</span></div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno">  277</span>  <span class="keywordtype">bool</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#a426ba917e01cba32ddad0d8c245a731b">operator&lt;=</a>(<span class="keyword">const</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; rhs) <span class="keyword">const</span>;</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno">  278</span><span class="comment"></span> </div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno">  279</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno">  280</span><span class="comment">   * Return `rhs &lt;= *this`.</span></div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno">  281</span><span class="comment">   *</span></div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno">  282</span><span class="comment">   * @param rhs</span></div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno">  283</span><span class="comment">   *        Object to compare.</span></div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno">  284</span><span class="comment">   * @return See above.</span></div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno">  285</span><span class="comment">   */</span></div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno">  286</span>  <span class="keywordtype">bool</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#af5b74ff5645f0bf49d0e20773fa5dca7">operator&gt;=</a>(<span class="keyword">const</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; rhs) <span class="keyword">const</span>;</div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno">  287</span><span class="comment"></span> </div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno">  288</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno">  289</span><span class="comment">   * Hash value of this Sequence_number for `unordered_*&lt;&gt;`.</span></div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno">  290</span><span class="comment">   *</span></div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno">  291</span><span class="comment">   * @return Ditto.</span></div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno">  292</span><span class="comment">   */</span></div>
<div class="line"><a id="l00293" name="l00293"></a><span class="lineno">  293</span>  <span class="keywordtype">size_t</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#a934068f778e1809e4aff773c7e7d5297">hash</a>() <span class="keyword">const</span>;</div>
<div class="line"><a id="l00294" name="l00294"></a><span class="lineno">  294</span><span class="comment"></span> </div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno">  295</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno">  296</span><span class="comment">   * Provides the raw sequence number.  This method is primarily intended for serialization.</span></div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno">  297</span><span class="comment">   *</span></div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno">  298</span><span class="comment">   * @return The raw sequence number.</span></div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno">  299</span><span class="comment">   */</span></div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno">  300</span>  <span class="keyword">const</span> <a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab307e12c0cf8cefbe7fb1ec8588af2a8">seq_num_t</a>&amp; <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#ac18fe030885b2ed3dfa290d8eec8c501">raw_num_ref</a>() <span class="keyword">const</span>;</div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno">  301</span><span class="comment"></span> </div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno">  302</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno">  303</span><span class="comment">   * Sets the raw sequence number. This method is primarily intended for deserialization.</span></div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno">  304</span><span class="comment">   *</span></div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno">  305</span><span class="comment">   * @param num</span></div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno">  306</span><span class="comment">   *        The raw sequence number.</span></div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno">  307</span><span class="comment">   */</span></div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno">  308</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#a95cb615ec74460c88b6fe5a605fb18a8">set_raw_num</a>(<a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab307e12c0cf8cefbe7fb1ec8588af2a8">seq_num_t</a> num);</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno">  309</span><span class="comment"></span> </div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno">  310</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno">  311</span><span class="comment">   * Updates the full set of metadata (used at least for convenient convention-based logging but not actual algorihtms)</span></div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno">  312</span><span class="comment">   * for this number.</span></div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno">  313</span><span class="comment">   *</span></div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno">  314</span><span class="comment">   * See class Sequence_number doc header for important tips and even more detail before using this</span></div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno">  315</span><span class="comment">   * surprisingly powerful utility.  It&#39;s all quite intuitive, but there are various nuances one might not expect.</span></div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno">  316</span><span class="comment">   *</span></div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno">  317</span><span class="comment">   * @note Metadata propagate via copy (copy construction, `operator=()`, and many implicit calls thereto), so it</span></div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno">  318</span><span class="comment">   *       is important to call this method with final values before the propagating begins.  See class Sequence_number</span></div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno">  319</span><span class="comment">   *       doc header for discussion.</span></div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno">  320</span><span class="comment">   * @param num_line_id</span></div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno">  321</span><span class="comment">   *        A 1-character descriptive identifier (conventionally, an upper-case letter such as L for Local) for</span></div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno">  322</span><span class="comment">   *        the number line of which this Sequence_number is a part.  `char(0)` means &quot;none&quot; or &quot;unknown&quot; and is</span></div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno">  323</span><span class="comment">   *        default at construction.</span></div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno">  324</span><span class="comment">   * @param zero_point</span></div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno">  325</span><span class="comment">   *        The Sequence_number `Z` such that the relative sequence number is expressed depending on</span></div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno">  326</span><span class="comment">   *        `this-&gt;m_num` versus `Z.m_num`; its sign is +, -, or = if the latter is less than, greater than, or equal</span></div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno">  327</span><span class="comment">   *        to the former, respectively; its magnitude is the absolute value of their difference.</span></div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno">  328</span><span class="comment">   *        0 is legal, but see class Sequence_number for nuance(s).  0 is default at construction.</span></div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno">  329</span><span class="comment">   * @param multiple_size</span></div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno">  330</span><span class="comment">   *        The block size, or multiple size, which is a positive value given when data are generally expected to be</span></div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno">  331</span><span class="comment">   *        segmented in whole multiples of this many contiguous Sequence_numbers.  0 means &quot;data are not expected to</span></div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno">  332</span><span class="comment">   *        be such multiples&quot; or &quot;unknown&quot;; this is the default at construction.</span></div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno">  333</span><span class="comment">   */</span></div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno">  334</span>  <span class="keywordtype">void</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#a77ce8cf348e93caa8bb03f22f7b7d120">set_metadata</a>(<span class="keywordtype">char</span> num_line_id = 0,</div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno">  335</span>                    <span class="keyword">const</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; zero_point = <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number.html#ad86f280e517a60ebbe1edfeac7263d6e">Sequence_number</a>(),</div>
<div class="line"><a id="l00336" name="l00336"></a><span class="lineno">  336</span>                    <a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab83e641aa9497115f6dbaf76b92f73c6">seq_num_delta_t</a> multiple_size = 0);</div>
<div class="line"><a id="l00337" name="l00337"></a><span class="lineno">  337</span> </div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno">  338</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno">  339</span>  <span class="comment">// Friends.</span></div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno">  340</span> </div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno">  341</span>  <span class="comment">// Friend of Sequence_number: For access to our internals.</span></div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno">  342</span>  <span class="keyword">friend</span> std::ostream&amp; <a class="code hl_friend" href="classflow_1_1net__flow_1_1Sequence__number.html#a1883ad1ea308ad6fe72f75b45b5d32e8">operator&lt;&lt;</a>(std::ostream&amp; os, <span class="keyword">const</span> <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a>&amp; seq_num);</div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno">  343</span> </div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno">  344</span>  <span class="comment">// Data.</span></div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno">  345</span><span class="comment"></span> </div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno">  346</span><span class="comment">  /// The raw sequence number.  This is the only datum used in algorithms.  The others are only for logging and similar.</span></div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number.html#ac6e88639a0c1b5a1da2bf5b7f203b38c">  347</a></span><span class="comment"></span>  <a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab307e12c0cf8cefbe7fb1ec8588af2a8">seq_num_t</a> <a class="code hl_variable" href="classflow_1_1net__flow_1_1Sequence__number.html#ac6e88639a0c1b5a1da2bf5b7f203b38c">m_num</a>;</div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno">  348</span><span class="comment"></span> </div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno">  349</span><span class="comment">  /// Identifies the owner number line; `char(0)` = unknown/none.  See set_metadata().</span></div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number.html#ae457e665c370f16e9196b1a88010dcbb">  350</a></span><span class="comment"></span>  <span class="keywordtype">char</span> <a class="code hl_variable" href="classflow_1_1net__flow_1_1Sequence__number.html#ae457e665c370f16e9196b1a88010dcbb">m_num_line_id</a>;</div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno">  351</span><span class="comment"></span> </div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno">  352</span><span class="comment">  /// Value for `m_num` such that the magnitude is zero.  See set_metadata().</span></div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number.html#adcd83d66fac1a77d9e94f13d1c4671b0">  353</a></span><span class="comment"></span>  <a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab307e12c0cf8cefbe7fb1ec8588af2a8">seq_num_t</a> <a class="code hl_variable" href="classflow_1_1net__flow_1_1Sequence__number.html#adcd83d66fac1a77d9e94f13d1c4671b0">m_zero_point_num</a>;</div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno">  354</span><span class="comment"></span> </div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno">  355</span><span class="comment">  /// Expected size of a full contiguous &quot;block&quot; of these numbers; 0 = unknown/blocks not expected.  See set_metadata().</span></div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number.html#a18436b6983e89f83d139e6c94dbd1e19">  356</a></span><span class="comment"></span>  <a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab83e641aa9497115f6dbaf76b92f73c6">seq_num_delta_t</a> <a class="code hl_variable" href="classflow_1_1net__flow_1_1Sequence__number.html#a18436b6983e89f83d139e6c94dbd1e19">m_multiple_size</a>;</div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno">  357</span>}; <span class="comment">// class Sequence_number</span></div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno">  358</span><span class="comment"></span> </div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno">  359</span><span class="comment">/**</span></div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno">  360</span><span class="comment"> * An object of this type generates a series of initial sequence numbers (ISN) that are meant to be</span></div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno">  361</span><span class="comment"> * sufficiently secure to protect against ISN attacks and confusion among different connections</span></div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno">  362</span><span class="comment"> * between the same endpoints occurring in series.</span></div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno">  363</span><span class="comment"> *</span></div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno">  364</span><span class="comment"> * The basic use case is to construct a Generator at the beginning of a Node&#39;s operation to</span></div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno">  365</span><span class="comment"> * initialize its state and then call generate_init_seq_num() whenever an ISN is needed.</span></div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno">  366</span><span class="comment"> *</span></div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno">  367</span><span class="comment"> * ### Thread safety ###</span></div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno">  368</span><span class="comment"> * Not safe to read/write or write/write one object simultaneously.</span></div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno">  369</span><span class="comment"> */</span></div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html">  370</a></span><span class="keyword">class </span><a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html">Sequence_number::Generator</a> :</div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno">  371</span>  <span class="keyword">public</span> <a class="code hl_class" href="classflow_1_1log_1_1Log__context.html">log::Log_context</a>,</div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno">  372</span>  <span class="keyword">private</span> boost::noncopyable</div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno">  373</span>{</div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno">  374</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno">  375</span>  <span class="comment">// Constructors/destructor.</span></div>
<div class="line"><a id="l00376" name="l00376"></a><span class="lineno">  376</span><span class="comment"></span> </div>
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno">  377</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno">  378</span><span class="comment">   * Constructs Generator.</span></div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno">  379</span><span class="comment">   *</span></div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno">  380</span><span class="comment">   * @param logger</span></div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno">  381</span><span class="comment">   *        Logger to use subsequently.</span></div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno">  382</span><span class="comment">   */</span></div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno">  383</span>  <span class="keyword">explicit</span> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a8c0005053088c63c912655222791dd7d">Generator</a>(<a class="code hl_class" href="classflow_1_1log_1_1Logger.html">log::Logger</a>* logger);</div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno">  384</span> </div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno">  385</span>  <span class="comment">// Methods.</span></div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno">  386</span><span class="comment"></span> </div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno">  387</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno">  388</span><span class="comment">   * Returns an initial sequence number (ISN) for use in a new connection.</span></div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno">  389</span><span class="comment">   *</span></div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno">  390</span><span class="comment">   * @return Ditto.</span></div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno">  391</span><span class="comment">   */</span></div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno">  392</span>  <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a> <a class="code hl_function" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a06f094532f4be6ab3b69d27ea39b2d4d">generate_init_seq_num</a>();</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno">  393</span> </div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno">  394</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno">  395</span>  <span class="comment">// Constants.</span></div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno">  396</span><span class="comment"></span> </div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno">  397</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno">  398</span><span class="comment">   * The maximum allowed value for the initial sequence number (ISN) for a given Flow-protocol connection</span></div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno">  399</span><span class="comment">   * (Peer_socket).  This should be high enough to allow a huge range of possible initial sequence</span></div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno">  400</span><span class="comment">   * numbers (to guard against ISN attacks, for example); but low enough to ensure that sequence</span></div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno">  401</span><span class="comment">   * numbers following the ISN within the given connection would take an extremely huge amount of</span></div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno">  402</span><span class="comment">   * time to wrap (i.e., overflow Sequence_numer::seq_num_t).  If such a value is chosen, the ISN can be secure and</span></div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno">  403</span><span class="comment">   * remove the need to worry about wrapping as well.</span></div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno">  404</span><span class="comment">   */</span></div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a94493589766b7ae9340a31807bdf4710">  405</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> <a class="code hl_typedef" href="classflow_1_1net__flow_1_1Sequence__number.html#ab307e12c0cf8cefbe7fb1ec8588af2a8">seq_num_t</a> <a class="code hl_variable" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a94493589766b7ae9340a31807bdf4710">S_MAX_INIT_SEQ_NUM</a>;</div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno">  406</span><span class="comment"></span> </div>
<div class="line"><a id="l00407" name="l00407"></a><span class="lineno">  407</span><span class="comment">  /// The ISN given out at a given time should increment every N; this is the value of  N.</span></div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a9aed10ea9740d60e1fd4de5de05b485b">  408</a></span><span class="comment"></span>  <span class="keyword">static</span> <span class="keyword">const</span> <a class="code hl_typedef" href="namespaceflow.html#a48799f1263cdeedec125be51a3db2b79">Fine_duration</a> <a class="code hl_variable" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a9aed10ea9740d60e1fd4de5de05b485b">S_TIME_PER_SEQ_NUM</a>;</div>
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno">  409</span><span class="comment"></span> </div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno">  410</span><span class="comment">  /**</span></div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno">  411</span><span class="comment">   * In addition to the actual time passed between two ISN generations, pretend this much additional</span></div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno">  412</span><span class="comment">   * time has also passed.</span></div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno">  413</span><span class="comment">   */</span></div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a585fba13c0fc74e626313ba61a725413">  414</a></span>  <span class="keyword">static</span> <span class="keyword">const</span> <a class="code hl_typedef" href="namespaceflow.html#a48799f1263cdeedec125be51a3db2b79">Fine_duration</a> <a class="code hl_variable" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a585fba13c0fc74e626313ba61a725413">S_MIN_DELAY_BETWEEN_ISN</a>;</div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno">  415</span> </div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno">  416</span>  <span class="comment">// Data.</span></div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno">  417</span><span class="comment"></span> </div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno">  418</span><span class="comment">  /// The last initial sequence number returned by generate_init_seq_num() (or zero if never called).</span></div>
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a280938c90324ee29507c14e51afea1d9">  419</a></span><span class="comment"></span>  <a class="code hl_class" href="classflow_1_1net__flow_1_1Sequence__number.html">Sequence_number</a> <a class="code hl_variable" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a280938c90324ee29507c14e51afea1d9">m_last_init_seq_num</a>;</div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno">  420</span><span class="comment"></span> </div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno">  421</span><span class="comment">  /// #Fine_clock time of the last invocation of generate_init_seq_num() (or default if never called).</span></div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno"><a class="line" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a8a5d72155fe52f9b72860dd69fec6b9e">  422</a></span><span class="comment"></span>  <a class="code hl_typedef" href="namespaceflow.html#a9d9cc2eeb10d398cff5591d446b763b8">Fine_time_pt</a> <a class="code hl_variable" href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a8a5d72155fe52f9b72860dd69fec6b9e">m_last_isn_generation</a>;</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno">  423</span>}; <span class="comment">// class Sequence_number::Generator</span></div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno">  424</span> </div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno">  425</span><span class="comment">// Free functions: in *_fwd.hpp.</span></div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno">  426</span> </div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno">  427</span>} <span class="comment">// namespace flow::net_flow</span></div>
<div class="ttc" id="aclassflow_1_1log_1_1Log__context_html"><div class="ttname"><a href="classflow_1_1log_1_1Log__context.html">flow::log::Log_context</a></div><div class="ttdoc">Convenience class that simply stores a Logger and/or Component passed into a constructor; and returns...</div><div class="ttdef"><b>Definition:</b> <a href="log_8hpp_source.html#l01609">log.hpp:1610</a></div></div>
<div class="ttc" id="aclassflow_1_1log_1_1Logger_html"><div class="ttname"><a href="classflow_1_1log_1_1Logger.html">flow::log::Logger</a></div><div class="ttdoc">Interface that the user should implement, passing the implementing Logger into logging classes (Flow'...</div><div class="ttdef"><b>Definition:</b> <a href="log_8hpp_source.html#l01280">log.hpp:1284</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_1_1Generator_html"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html">flow::net_flow::Sequence_number::Generator</a></div><div class="ttdoc">An object of this type generates a series of initial sequence numbers (ISN) that are meant to be suff...</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00370">seq_num.hpp:373</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_1_1Generator_html_a06f094532f4be6ab3b69d27ea39b2d4d"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a06f094532f4be6ab3b69d27ea39b2d4d">flow::net_flow::Sequence_number::Generator::generate_init_seq_num</a></div><div class="ttdeci">Sequence_number generate_init_seq_num()</div><div class="ttdoc">Returns an initial sequence number (ISN) for use in a new connection.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00048">seq_num.cpp:48</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_1_1Generator_html_a280938c90324ee29507c14e51afea1d9"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a280938c90324ee29507c14e51afea1d9">flow::net_flow::Sequence_number::Generator::m_last_init_seq_num</a></div><div class="ttdeci">Sequence_number m_last_init_seq_num</div><div class="ttdoc">The last initial sequence number returned by generate_init_seq_num() (or zero if never called).</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00419">seq_num.hpp:419</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_1_1Generator_html_a585fba13c0fc74e626313ba61a725413"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a585fba13c0fc74e626313ba61a725413">flow::net_flow::Sequence_number::Generator::S_MIN_DELAY_BETWEEN_ISN</a></div><div class="ttdeci">static const Fine_duration S_MIN_DELAY_BETWEEN_ISN</div><div class="ttdoc">In addition to the actual time passed between two ISN generations, pretend this much additional time ...</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00414">seq_num.hpp:414</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_1_1Generator_html_a8a5d72155fe52f9b72860dd69fec6b9e"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a8a5d72155fe52f9b72860dd69fec6b9e">flow::net_flow::Sequence_number::Generator::m_last_isn_generation</a></div><div class="ttdeci">Fine_time_pt m_last_isn_generation</div><div class="ttdoc">Fine_clock time of the last invocation of generate_init_seq_num() (or default if never called).</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00422">seq_num.hpp:422</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_1_1Generator_html_a8c0005053088c63c912655222791dd7d"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a8c0005053088c63c912655222791dd7d">flow::net_flow::Sequence_number::Generator::Generator</a></div><div class="ttdeci">Generator(log::Logger *logger)</div><div class="ttdoc">Constructs Generator.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00042">seq_num.cpp:42</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_1_1Generator_html_a94493589766b7ae9340a31807bdf4710"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a94493589766b7ae9340a31807bdf4710">flow::net_flow::Sequence_number::Generator::S_MAX_INIT_SEQ_NUM</a></div><div class="ttdeci">static const seq_num_t S_MAX_INIT_SEQ_NUM</div><div class="ttdoc">The maximum allowed value for the initial sequence number (ISN) for a given Flow-protocol connection ...</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00405">seq_num.hpp:405</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_1_1Generator_html_a9aed10ea9740d60e1fd4de5de05b485b"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number_1_1Generator.html#a9aed10ea9740d60e1fd4de5de05b485b">flow::net_flow::Sequence_number::Generator::S_TIME_PER_SEQ_NUM</a></div><div class="ttdeci">static const Fine_duration S_TIME_PER_SEQ_NUM</div><div class="ttdoc">The ISN given out at a given time should increment every N; this is the value of N.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00408">seq_num.hpp:408</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html">flow::net_flow::Sequence_number</a></div><div class="ttdoc">An internal net_flow sequence number identifying a piece of data.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00125">seq_num.hpp:126</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a18436b6983e89f83d139e6c94dbd1e19"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a18436b6983e89f83d139e6c94dbd1e19">flow::net_flow::Sequence_number::m_multiple_size</a></div><div class="ttdeci">seq_num_delta_t m_multiple_size</div><div class="ttdoc">Expected size of a full contiguous &quot;block&quot; of these numbers; 0 = unknown/blocks not expected....</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00356">seq_num.hpp:356</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a1883ad1ea308ad6fe72f75b45b5d32e8"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a1883ad1ea308ad6fe72f75b45b5d32e8">flow::net_flow::Sequence_number::operator&lt;&lt;</a></div><div class="ttdeci">friend std::ostream &amp; operator&lt;&lt;(std::ostream &amp;os, const Sequence_number &amp;seq_num)</div><div class="ttdoc">Prints given sequence number to given ostream.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00169">seq_num.cpp:169</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a1d555c4d74ef4d87f91c8ce51ec47a6b"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a1d555c4d74ef4d87f91c8ce51ec47a6b">flow::net_flow::Sequence_number::valid</a></div><div class="ttdeci">bool valid() const</div><div class="ttdoc">Returns true if and only if *this != Sequence_number() (i.e., is non-zero).</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00106">seq_num.cpp:106</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a24819702817b8730ec27a39675768d55"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a24819702817b8730ec27a39675768d55">flow::net_flow::Sequence_number::operator==</a></div><div class="ttdeci">bool operator==(const Sequence_number &amp;rhs) const</div><div class="ttdoc">Whether *this is the same sequence number as rhs.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00139">seq_num.cpp:139</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a3273e706e3184fd8647d7a8ed77b3a2b"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a3273e706e3184fd8647d7a8ed77b3a2b">flow::net_flow::Sequence_number::operator+</a></div><div class="ttdeci">Sequence_number operator+(seq_num_delta_t delta) const</div><div class="ttdoc">Returns new sequence number that is *this advanced (or reversed) by the given distance.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00129">seq_num.cpp:129</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a3ffb36c06efb99de2c36c69678b51acb"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a3ffb36c06efb99de2c36c69678b51acb">flow::net_flow::Sequence_number::operator-</a></div><div class="ttdeci">seq_num_delta_t operator-(const Sequence_number &amp;rhs) const</div><div class="ttdoc">Returns the distance from *this to rhs.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00111">seq_num.cpp:111</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a40b55e448b1ef23467e9f33b2c62d01f"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a40b55e448b1ef23467e9f33b2c62d01f">flow::net_flow::Sequence_number::operator&lt;</a></div><div class="ttdeci">bool operator&lt;(const Sequence_number &amp;rhs) const</div><div class="ttdoc">Whether *this is less than rhs.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00149">seq_num.cpp:149</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a426ba917e01cba32ddad0d8c245a731b"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a426ba917e01cba32ddad0d8c245a731b">flow::net_flow::Sequence_number::operator&lt;=</a></div><div class="ttdeci">bool operator&lt;=(const Sequence_number &amp;rhs) const</div><div class="ttdoc">Return !(*this &gt; rhs).</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00164">seq_num.cpp:164</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a77ce8cf348e93caa8bb03f22f7b7d120"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a77ce8cf348e93caa8bb03f22f7b7d120">flow::net_flow::Sequence_number::set_metadata</a></div><div class="ttdeci">void set_metadata(char num_line_id=0, const Sequence_number &amp;zero_point=Sequence_number(), seq_num_delta_t multiple_size=0)</div><div class="ttdoc">Updates the full set of metadata (used at least for convenient convention-based logging but not actua...</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00268">seq_num.cpp:268</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a88c07f9b2c18c962b68a3886e2f005f5"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a88c07f9b2c18c962b68a3886e2f005f5">flow::net_flow::Sequence_number::operator+=</a></div><div class="ttdeci">Sequence_number &amp; operator+=(seq_num_delta_t delta)</div><div class="ttdoc">Advances (or reverses) this sequence number by the given distance.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00118">seq_num.cpp:118</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a934068f778e1809e4aff773c7e7d5297"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a934068f778e1809e4aff773c7e7d5297">flow::net_flow::Sequence_number::hash</a></div><div class="ttdeci">size_t hash() const</div><div class="ttdoc">Hash value of this Sequence_number for unordered_*&lt;&gt;.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00252">seq_num.cpp:252</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_a95cb615ec74460c88b6fe5a605fb18a8"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#a95cb615ec74460c88b6fe5a605fb18a8">flow::net_flow::Sequence_number::set_raw_num</a></div><div class="ttdeci">void set_raw_num(seq_num_t num)</div><div class="ttdoc">Sets the raw sequence number.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00263">seq_num.cpp:263</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_aab26c0d5ac005a150ec9c31c3d83802c"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#aab26c0d5ac005a150ec9c31c3d83802c">flow::net_flow::Sequence_number::operator-=</a></div><div class="ttdeci">Sequence_number &amp; operator-=(seq_num_delta_t delta)</div><div class="ttdoc">Equivalent to: operator+=(-delta).</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00124">seq_num.cpp:124</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_aad867d849f5c76125dc9ea1abb649c15"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#aad867d849f5c76125dc9ea1abb649c15">flow::net_flow::Sequence_number::operator=</a></div><div class="ttdeci">Sequence_number &amp; operator=(const Sequence_number &amp;source)</div><div class="ttdoc">Copy operator.</div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_ab307e12c0cf8cefbe7fb1ec8588af2a8"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#ab307e12c0cf8cefbe7fb1ec8588af2a8">flow::net_flow::Sequence_number::seq_num_t</a></div><div class="ttdeci">uint64_t seq_num_t</div><div class="ttdoc">Raw sequence number type.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00138">seq_num.hpp:138</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_ab83e641aa9497115f6dbaf76b92f73c6"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#ab83e641aa9497115f6dbaf76b92f73c6">flow::net_flow::Sequence_number::seq_num_delta_t</a></div><div class="ttdeci">int64_t seq_num_delta_t</div><div class="ttdoc">Integer type used to express differences (distances) between Sequence_numbers.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00150">seq_num.hpp:150</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_ac18fe030885b2ed3dfa290d8eec8c501"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#ac18fe030885b2ed3dfa290d8eec8c501">flow::net_flow::Sequence_number::raw_num_ref</a></div><div class="ttdeci">const seq_num_t &amp; raw_num_ref() const</div><div class="ttdoc">Provides the raw sequence number.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00258">seq_num.cpp:258</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_ac6e88639a0c1b5a1da2bf5b7f203b38c"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#ac6e88639a0c1b5a1da2bf5b7f203b38c">flow::net_flow::Sequence_number::m_num</a></div><div class="ttdeci">seq_num_t m_num</div><div class="ttdoc">The raw sequence number. This is the only datum used in algorithms. The others are only for logging a...</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00347">seq_num.hpp:347</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_ad42584bd93111318e71d75d2898e0d72"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#ad42584bd93111318e71d75d2898e0d72">flow::net_flow::Sequence_number::Sequence_number</a></div><div class="ttdeci">Sequence_number(const Sequence_number &amp;source)</div><div class="ttdoc">Copy constructor.</div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_ad86f280e517a60ebbe1edfeac7263d6e"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#ad86f280e517a60ebbe1edfeac7263d6e">flow::net_flow::Sequence_number::Sequence_number</a></div><div class="ttdeci">Sequence_number()</div><div class="ttdoc">Constructs sequence number that is zero (not a valid sequence number; less than all others).</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00096">seq_num.cpp:96</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_adcd83d66fac1a77d9e94f13d1c4671b0"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#adcd83d66fac1a77d9e94f13d1c4671b0">flow::net_flow::Sequence_number::m_zero_point_num</a></div><div class="ttdeci">seq_num_t m_zero_point_num</div><div class="ttdoc">Value for m_num such that the magnitude is zero. See set_metadata().</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00353">seq_num.hpp:353</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_ae457e665c370f16e9196b1a88010dcbb"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#ae457e665c370f16e9196b1a88010dcbb">flow::net_flow::Sequence_number::m_num_line_id</a></div><div class="ttdeci">char m_num_line_id</div><div class="ttdoc">Identifies the owner number line; char(0) = unknown/none. See set_metadata().</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8hpp_source.html#l00350">seq_num.hpp:350</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_ae5ee8f6f299fbc5e578bcfd337bf520b"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#ae5ee8f6f299fbc5e578bcfd337bf520b">flow::net_flow::Sequence_number::operator&gt;</a></div><div class="ttdeci">bool operator&gt;(const Sequence_number &amp;rhs) const</div><div class="ttdoc">Return rhs &lt; *this.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00154">seq_num.cpp:154</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_af4a83d85ed26f8d0e0c81375d5505258"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#af4a83d85ed26f8d0e0c81375d5505258">flow::net_flow::Sequence_number::operator!=</a></div><div class="ttdeci">bool operator!=(const Sequence_number &amp;rhs) const</div><div class="ttdoc">Return !(*this == rhs).</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00144">seq_num.cpp:144</a></div></div>
<div class="ttc" id="aclassflow_1_1net__flow_1_1Sequence__number_html_af5b74ff5645f0bf49d0e20773fa5dca7"><div class="ttname"><a href="classflow_1_1net__flow_1_1Sequence__number.html#af5b74ff5645f0bf49d0e20773fa5dca7">flow::net_flow::Sequence_number::operator&gt;=</a></div><div class="ttdeci">bool operator&gt;=(const Sequence_number &amp;rhs) const</div><div class="ttdoc">Return rhs &lt;= *this.</div><div class="ttdef"><b>Definition:</b> <a href="seq__num_8cpp_source.html#l00159">seq_num.cpp:159</a></div></div>
<div class="ttc" id="adetail_2net__flow__fwd_8hpp_html"><div class="ttname"><a href="detail_2net__flow__fwd_8hpp.html">net_flow_fwd.hpp</a></div></div>
<div class="ttc" id="alog_8hpp_html"><div class="ttname"><a href="log_8hpp.html">log.hpp</a></div></div>
<div class="ttc" id="anamespaceflow_1_1net__flow_html"><div class="ttname"><a href="namespaceflow_1_1net__flow.html">flow::net_flow</a></div><div class="ttdoc">Flow module containing the API and implementation of the Flow network protocol, a TCP-inspired stream...</div><div class="ttdef"><b>Definition:</b> <a href="asio_2node_8cpp_source.html#l00024">node.cpp:25</a></div></div>
<div class="ttc" id="anamespaceflow_html_a48799f1263cdeedec125be51a3db2b79"><div class="ttname"><a href="namespaceflow.html#a48799f1263cdeedec125be51a3db2b79">flow::Fine_duration</a></div><div class="ttdeci">Fine_clock::duration Fine_duration</div><div class="ttdoc">A high-res time duration as computed from two Fine_time_pts.</div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00416">common.hpp:416</a></div></div>
<div class="ttc" id="anamespaceflow_html_a9d9cc2eeb10d398cff5591d446b763b8"><div class="ttname"><a href="namespaceflow.html#a9d9cc2eeb10d398cff5591d446b763b8">flow::Fine_time_pt</a></div><div class="ttdeci">Fine_clock::time_point Fine_time_pt</div><div class="ttdoc">A high-res time point as returned by Fine_clock::now() and suitable for precise time math in general.</div><div class="ttdef"><b>Definition:</b> <a href="common_8hpp_source.html#l00413">common.hpp:413</a></div></div>
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